#include<bits/stdc++.h>
#include"testlib.h"
using namespace std;
using ll = long long;

const ll HWmin = 2, HWmax = 1'000'000'000;

int main(){
    registerValidation();
    inf.readLong(HWmin,HWmax);
    inf.readSpace();
    inf.readLong(HWmin,HWmax);
    inf.readEoln();
    inf.readEof();
}